Dynamic Features of Shallow Groundwater in North China Plain
华北平原浅层地下水水位动态变化

The groundwater level of 39 unconfined observation wells from 2004 to 2006 in North China Plain (NCP) was monitored using automatic groundwater monitoring data loggers KADEC-MIZU II of Japan. The automatic groundwater sensors were installed for the corporation project between China and Japan. Combined with the monitoring results from 2004 to 2006 with the major factors affecting the dynamic patterns of groundwater, such as relief, depth of groundwater level, discharge extent and rivers, the dynamic regions of NCP groundwater were compiled. According to the dynamic features of groundwater in NCP, six dynamic patterns of groundwater level were identified, including discharge pattern in the piedmont plain, lateral recharge-runoff-discharge pattern in the piedmont plain, recharge- discharge pattern in the middle channel zone, precipitation infiltration-evaporation pattern in the shallow groundwater region of the central plain, lateral recharge-evaporation pattern in the recharge-affected area along the Yellow River, and infiltration-discharge-evaporation pattern in the littoral plain. Based on this, various dynamic patterns features of groundwater were interpreted and different factors of different dynamic patterns were compared.